mc94mx21 Freescale Semiconductor, Inc, mc94mx21 Datasheet - Page 45

• Manufacturer Part Number: mc94mx21
• Description: 333 And 350 Mhz
• Manufacturer: Freescale Semiconductor, Inc

3.14
The PWM can be programmed to select one of two clock signals as its source frequency. The selected
clock signal is passed through a divider and a prescaler before being input to the counter. The output is
available at the pulse-width modulator output (PWMO) external pin.
Freescale Semiconductor
1. C
Ref No.
2a
2b
3a
3b
4a
4b
L
1
of PWMO = TBD
Pulse-Width Modulator
System CLK frequency
Clock high time
Clock low time
Clock fall time
Clock rise time
Output delay time
Output setup time
System Clock
Parameter
PWM Output
1
1
1
1
1
1
1
Table 29. PWM Output Timing Parameters
Figure 37. PWM Output Timing Diagram
MC94MX21 Technical Data, Rev. 1.4
Minimum
2a
12.29
9.91
9.37
8.71
0
–
–
4a
1.8 V ± 0.1 V
2b
Maximum
0.5
0.5
45
–
–
–
–
1
3a
Minimum
12.29
9.91
3.61
3.03
0
–
–
3.0 V ± 0.3 V
3b
4b
Maximum
0.5
0.5
45
–
–
–
–
Specifications
MHz
Unit
ns
ns
ns
ns
ns
ns
45